MIDI implementation

Every control of Generic 8 knobs + 8 pads and the message it sends

Generated from the profile file, so it is the same table the on-screen controller plays. Channels are 1–16; numbers are real MIDI numbers.

MIDI implementation of Generic 8 knobs + 8 pads
Control	Type	Message	Ch	Number	Signal	LED feedback	Verified
K1 `k1`	knob	CC	1	70	`midi/g8k8p/k1`	—	yes
K2 `k2`	knob	CC	1	71	`midi/g8k8p/k2`	—	yes
K3 `k3`	knob	CC	1	72	`midi/g8k8p/k3`	—	yes
K4 `k4`	knob	CC	1	73	`midi/g8k8p/k4`	—	yes
K5 `k5`	knob	CC	1	74	`midi/g8k8p/k5`	—	yes
K6 `k6`	knob	CC	1	75	`midi/g8k8p/k6`	—	yes
K7 `k7`	knob	CC	1	76	`midi/g8k8p/k7`	—	yes
K8 `k8`	knob	CC	1	77	`midi/g8k8p/k8`	—	yes
Pad 1 `pad1`	pad	Note · velocity	10	36 · C2	`midi/g8k8p/pad1`	—	yes
Pad 2 `pad2`	pad	Note · velocity	10	37 · C#2	`midi/g8k8p/pad2`	—	yes
Pad 3 `pad3`	pad	Note · velocity	10	38 · D2	`midi/g8k8p/pad3`	—	yes
Pad 4 `pad4`	pad	Note · velocity	10	39 · D#2	`midi/g8k8p/pad4`	—	yes
Pad 5 `pad5`	pad	Note · velocity	10	40 · E2	`midi/g8k8p/pad5`	—	yes
Pad 6 `pad6`	pad	Note · velocity	10	41 · F2	`midi/g8k8p/pad6`	—	yes
Pad 7 `pad7`	pad	Note · velocity	10	42 · F#2	`midi/g8k8p/pad7`	—	yes
Pad 8 `pad8`	pad	Note · velocity	10	43 · G2	`midi/g8k8p/pad8`	—	yes

LED feedback is not modeled for this one yet, so OAV does not light its LEDs. Every control still plays and sends its message.

Sources

convention open-audiovisual generic layoutNo device behind it: default messages are a convention (knobs CC 70–77 like many 8-knob pads, faders CC 20–27 in the undefined range, pads GM drum notes from 36 on channel 10). Plug an unknown controller in, pick this layout, and auto-learn binds its messages in the order you move the controls.

Port names it recognises

Generic layouts never match a port by themselves: assign one by hand, then learn.

Signals

Every control publishes midi/g8k8p/<control> (0..1), plus /raw; pads add /hit, encoders /delta, keys /on /off and n<note>; the last control touched is midi/g8k8p/last.

Use it

Use Generic 8 knobs + 8 pads in your own work

Embed it with one line

No import map, no build step. Change layout, add hardware="ask" for a Connect button.

html

<script type="module" src="https://openaudiovisual.com/packages/midi/element.js"></script>
<oav-controller profile="generic-8k8p" readout></oav-controller>

Or as an iframe

For places that only take an iframe. Every event arrives as a postMessage.

html

<iframe src="https://openaudiovisual.com/embed/controller/?profile=generic-8k8p&readout"
        width="720" height="238" style="border:0;max-width:100%" allow="midi"
        title="Generic 8 knobs + 8 pads"></iframe>
<script>
  // every control the visitor plays arrives here
  addEventListener('message', (e) => {
    if (e.data?.source !== 'openav' || e.data.type !== 'control') return;
    console.log(e.data.detail.signal, e.data.detail.value);
  });
</script>

Send it to Ableton, TouchDesigner or Resolume
What you play on screen leaves as real MIDI on the IAC bus (macOS) or a loopMIDI port (Windows). The steps are on the catalog page.
html
```

<script type="module" src="https://openaudiovisual.com/packages/midi/element.js"></script>
<oav-controller profile="generic-8k8p" midi-out="IAC" readout></oav-controller>

```
macOS: Audio MIDI Setup → MIDI Studio → IAC Driver → “Device is online”. Windows 11: the built-in Windows MIDI Services have a loopback (not tested by us); older Windows: install loopMIDI, add a port and use midi-out="loopMIDI".

In p5.js, with one line

The one-line injection names knobs, faders and pads by their order in this layout, the order of the table above. Add ?profile=generic-8k8p to make the on-screen controller this one.

javascript

document.head.prepend(Object.assign(document.createElement('script'), { src: 'https://openaudiovisual.com/p5/oav-p5.js?profile=generic-8k8p' }));

In your sketch	Control	Message
`knob1`	K1 `k1`	CC 70 · Ch 1
`knob2`	K2 `k2`	CC 71 · Ch 1
`knob3`	K3 `k3`	CC 72 · Ch 1
`knob4`	K4 `k4`	CC 73 · Ch 1
`knob5`	K5 `k5`	CC 74 · Ch 1
`knob6`	K6 `k6`	CC 75 · Ch 1
`knob7`	K7 `k7`	CC 76 · Ch 1
`knob8`	K8 `k8`	CC 77 · Ch 1
`pad1`	Pad 1 `pad1`	Note 36 · C2 · Ch 10
`pad2`	Pad 2 `pad2`	Note 37 · C#2 · Ch 10
`pad3`	Pad 3 `pad3`	Note 38 · D2 · Ch 10
`pad4`	Pad 4 `pad4`	Note 39 · D#2 · Ch 10
`pad5`	Pad 5 `pad5`	Note 40 · E2 · Ch 10
`pad6`	Pad 6 `pad6`	Note 41 · F2 · Ch 10
`pad7`	Pad 7 `pad7`	Note 42 · F#2 · Ch 10
`pad8`	Pad 8 `pad8`	Note 43 · G2 · Ch 10

p5.js sketch

function draw() {
  background(knob1 * 255);   // K1 · CC 70
  circle(width / 2, height / 2, 50 + knob2 * 300);   // K2 · CC 71
}

function padPressed(n, velocity) {      // n = 1…8, as in the table
  circle(random(width), random(height), velocity * 100);
}

This is a generic layout. Its numbering applies when you choose it as the on-screen controller; an unknown real controller numbers its knobs in the order you turn them.

The whole p5.js page →

Around this controller

AKAI LPD8 (mk2)AKAI Professional · 8 pads · 8 knobs
ODD BallODD · 3 pads · 4 knobs · 3 faders
Generic 16 padsGeneric layout · 16 pads
AKAI MPK mini mk3AKAI Professional · 8 pads · 25 keys · 8 knobs · 2 wheels
Novation Launchkey Mini MK3Novation · 16 pads · 25 keys · 8 knobs · 2 touch strips
Novation Launchkey 25 MK4Novation · 16 pads · 25 keys · 8 knobs · 1 button · 2 wheels

Compare Generic 8 knobs + 8 pads with the rest, by keys, pads, knobs, faders and LED feedback →

Missing

Is your controller not here?

Open an issue with the brand and model, whether you have the unit and a link to the manual. Or write the profile yourself: it is one JSON file.

GitHub

Is something in this data wrong?

Every number on this page comes from one JSON file. If it disagrees with your unit or the manual, tell us which firmware you checked and we fix the file.

Generic 8 knobs + 8 pads